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The Daily Insight

How does beta affect stock price?

Author

James Williams

Published Feb 16, 2026

Beta indicates how volatile a stock’s price is in comparison to the overall stock market. A beta greater than 1 indicates a stock’s price swings more wildly (i.e., more volatile) than the overall market. A beta of less than 1 indicates that a stock’s price is less volatile than the overall market.

What does beta tell you about a stock?

Beta is a measure of a stock’s volatility in relation to the overall market. If a stock moves less than the market, the stock’s beta is less than 1.0. High-beta stocks are supposed to be riskier but provide higher return potential; low-beta stocks pose less risk but also lower returns.

Why do we use unlevered beta?

Unlevered beta is essentially the unlevered weighted average cost. This is what the average cost would be without using debt or leverage. To account for companies with different debts and capital structure, it’s necessary to unlever the beta. That number is then used to find the cost of equity.

What happens if a stock has beta of 0.5?

That means this stock could rise by 20%. On the other hand, if the market declines 6%, investors in that company can expect a loss of 12%. If a stock had a beta of 0.5, we would expect it to be half as volatile as the market: A market return of 10% would mean a 5% gain for the company.

What does the beta of the S & P 500 mean?

A beta of 1 represents the volatility of the given index used to represent the overall market, against which other stocks and their betas are measured. The S&P 500 is such an index. If a stock has a beta of one, it will move the same amount and direction as the index.

How is beta used to measure market risk?

The second caveat for using beta is that it is a measure of systematic risk, which is the risk that the market faces as a whole. The market index to which a stock is being compared is affected by market-wide risks. So, beta can only take into account the effects of market-wide risks on the stock.

What’s the beta of Microsoft on Yahoo Finance?

The beta on Yahoo! compares the activity of the stock over the last five years to that of the S&P 500 Index. For example, as of Oct. 27, 2020, the beta for Microsoft (MSFT), as found on Yahoo! Finance, is 0.92. A beta of “0.00” on Yahoo! Finance means that the stock is either a new issue or doesn’t yet have a beta calculated for it.